Features: 888 bytes or rewrite-able and optionally password protected or permanently lockable storage (600%+ the amount of storage as an NFC NTAG213) Once Locked the tag cannot be unlocked Stainless Steel Finish PET sticker is water resistant NFC Forum Type 2 Frequency: 13.56MHz Operation Temperature: -20°C~+80°C (-4°F~+176°F) Storage Temperature: -20°C~+80°C (-4°F~+176°F) Made for Metal Surfaces with upgraded 3M 300LSE Adhesive (On-Metal or Anti-Metal) Easily concealed on a stainless surface and the smallest size an NTAG216 can be Comes in Resealable Bag for storage Applications: Store a web address that will take any NFC smartphone right to your website (or Twitter, Facebook, Instagram, Pintrest, etc.) Store your Credit Card Issuing Bank's Contact Number and stick on the back of your Credit Card to easily call them up if you have any issues. Automate repetitive tasks on an NFC enabled smartphone. (example: Turn Bluetooth off, turn Ringer off, unlock screen, etc.)